Control Company 4148 JUMBO REFRIGERATOR/FREEZER THERMOMETER - Manual (Page 2)

ON/OFF BUTTON
The ON/OFF button located on the back of the unit may be used to turn the unit off
when the thermometer is not being used. The minimum/maximum memory and
alarm limits are not cleared when the unit is turned off. To turn the unit off, press the
ON/OFF button. Each successive press of the ON/OFF button will turn the unit on or
off.
No alarms will sound and no minimum/maximum memory will be recorded when
the unit is off.
BENCH STAND
The unit is supplied with a bench stand that is a part of the back of the unit. To use
the bench stand, locate the small openings on either side of the bottom of the unit.
Place your fingernail into one of the openings and flip the stand out. To close the
stand, simply snap it shut.
WALL MOUNTING THE UNIT
Set a screw into the wall at the desired location. Do not set the screw flush to the wall,
the head of the screw will need to slip into the receptacle on the back of the unit. Once
the screw has been properly set, hang the unit in place by sliding the receptacle on the
back of the unit over the head of the screw.
USING THE ALARM AND MEMORY TO MONITOR A REFRIGERATOR/FREEZER
Following is an example of how to use the alarm and memory to monitor the
temperature inside a refrigerator or freezer. This example is provided only as a helpful
guide and is not intended to replace existing facility requirements or procedures.
In this example, the refrigerator temperature must be monitored and logged for each
24 hour period and certain actions must be taken if temperature falls below 0°C or
rises above 5°C at any time during the 24 hour period.
Unit Setup Example
1. Plug the probe into the unit.
2. Install the battery.
3. Place the probe sensor inside the refrigerator.
4. Place the display outside the refrigerator.
5. Select the Probe Temperature Display mode. (See the “Temperature Display
Modes” section.)
At this point, if using a bottle probe, allow sufficient time for the bottle probe to reach
equilibrium with the true current temperature inside the refrigerator.
6. Set the probe temperature low alarm limit to 0°C. (See the “Setting Probe (OUT)
Temperature Alarm Limits” section.)
7. Set the probe temperature high alarm limit to 5°C. (See the “Setting Probe (OUT)
Temperature Alarm Limits” section.)
8. Enable the alarms. (See the “Enable/Disable Alarms” section.)
9. Clear the minimum and maximum memory. (See the “Clearing the Probe (OUT)
Temperature Memory” section.)
10. Select the probe temperature with Min/Max memory display mode. (See the
“Temperature Display Modes” section.)
The alarm limits have been set and the alarm has been enabled. The display has been
set to show the current temperature inside the refrigerator along with the minimum and
maximum temperature that has been achieved inside the refrigerator.
If the temperature inside the refrigerator goes outside the alarm limits (equal to or
lower than the low alarm set point, or equal to or greater than the high alarm set point),
the alarm will sound.
If no one is available to hear the alarm sounding (overnight), and the temperature
returns to an in-range condition, the memory will provide a record of the single lowest
and highest temperature achieved. When the temperatures are recorded into the
manual log, the memory will allow the user to see that the temperature inside the
refrigerator had gone outside of the acceptable range.
Monitoring Procedure Example
Keep a notebook or spreadsheet as a manual log.
1. At the same time every day, record the following into the manual log:
● • Current Date and Time
● • Current Temperature Reading
● • Minimum Temperature Reading (MIN)
● • Maximum Temperature Reading (MAX)
2. Once the above items have been manually recorded, clear both the minimum and
maximum temperature memory. (See the “Clearing the Probe (OUT) Temperature
Memory” section.)
By clearing the memory each day, the minimum and maximum temperature memory will
provide a record of the minimum and maximum temperature that has been achieved
inside the refrigerator over the past 24 hour monitoring period. The memory will also
allow the user to see if the temperature inside the refrigerator went outside of the
acceptable range when there was no one available to hear the alarm (overnight).
ALL OPERATIONAL DIFFICULTIES
If this unit does not function properly for any reason, replace the battery with a new
high-quality battery (see the “Battery Replacement” section). Low battery power can
occasionally cause any number of “apparent” operational difficulties. Replacing the
battery with a new fresh battery will solve most difficulties.
BATTERY REPLACEMENT
Erratic readings, a faint display, no display, or a battery symbol appearing on the
display are all indications that the battery must be replaced. Open the battery
compartment by depressing the tab located at the top of the battery cover and lifting it
out. The battery cover is hinged at the bottom so that the battery compartment may be
opened without completely removing the battery cover. Remove the exhausted
battery and replace with a AAA alkaline battery. Make certain to insert the new battery
with the proper polarity as indicated in the illustration in the battery compartment.
Close the battery cover.
Replacing the battery has the same affect as pressing the RESET button. (See the
“RESET BUTTON” section.)
Warranty, Service, or Recalibration
For warranty, service, or recalibration, contact:
CONTROL COMPANY
4455 Rex Road
Friendswood, Texas 77546 USA
Ph. 281-482-1714
Fax 281-482-9448
E-mail [email protected]
www.control3.com
Control Company is ISO 9001 Quality-Certified by
DNV and ISO 17025 accredited as a Calibration
Laboratory by A2LA.
Control Company Cat. No. 92-4148-00
Traceable
® is a registered trademark of Control Company
© 2008 Control Company